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Definition of "seamount" [seamount]

  • An underwater mountain rising from the ocean floor and having a peaked or flat-topped summit below the surface of the sea. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "seamount" in a sentence
  • "One of the highlights of the 2009 mission was the August 25 discovery of an underwater mountain, known as a seamount, by scientists aboard the Healy."
  • "The island group represents the exposed peaks of a large volcanic seamount which is about 65 km long and 24 km wide and which rises from ocean depths of over 1,800 m."
  • "'seamount', residing 120 km off the central California coast in approximately 3600 m of water"